package com.example.forum.controller;


import com.example.forum.common.AppResult;
import com.example.forum.common.ResultCode;
import com.example.forum.config.AppConfig;
import com.example.forum.model.User;
import com.example.forum.services.IUserService;
import com.example.forum.utils.MD5Util;
import com.example.forum.utils.StringUtil;
import com.example.forum.utils.UUIDUtil;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import io.swagger.annotations.ApiParam;
import lombok.NonNull;
import lombok.extern.slf4j.Slf4j;
import org.springframework.web.bind.annotation.*;

import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;


@Api(tags = "用户接口")
@Slf4j
@RestController
@RequestMapping("/user")
public class UserController {

    @Resource
    private IUserService userService;
    /**
     *
     * @param username  用户名
     * @param nickname  昵称
     * @param password  密码
     * @param passwordRepeat 重复密码
     * @return
     */
    @ApiOperation("用户注册")
    @PostMapping("/register")
     public AppResult register(@ApiParam("用户名") @RequestParam("username")@NonNull String username,
                               @ApiParam("昵称") @RequestParam("nickname")@NonNull String nickname,
                               @ApiParam("密码") @RequestParam("password")@NonNull String password,
                               @ApiParam("重复密码") @RequestParam("passwordRepeat")@NonNull String passwordRepeat) {



        //       1. 非空校验
//        if(StringUtil.isEmpty(username) ||
//        StringUtil.isEmpty(nickname) ||
//        StringUtil.isEmpty(password) ||
//        StringUtil.isEmpty(passwordRepeat)) {
//            return AppResult.failed(ResultCode.FAILED_PARAMS_VALIDATE);
//        }


        //2. 校验密码和重复密码是否相同
        if (!password.equals(passwordRepeat)) {
            log.warn(ResultCode.FAILED_TWO_PWD_NOT_SAME.toString());
           return AppResult.failed(ResultCode.FAILED_TWO_PWD_NOT_SAME);
        }

        //3.准备数据
        User user = new User();
        user.setUsername(username);
        user.setNickname(nickname);
        //处理密码
        String salt = UUIDUtil.UUID_32();
        String encryptPassword = MD5Util.md5salt(password,salt);

        user.setPassword(encryptPassword);
        user.setSalt(salt);

        //4调用services层
          userService.createNormalUser(user);

        return AppResult.success();

     }

    @ApiOperation("用户登录")
    @PostMapping("/login")
    public AppResult login(HttpServletRequest request,
                           @ApiParam("用户名")@RequestParam("username") String username,
                           @ApiParam("密码")@RequestParam("password") String password) {
        User user = userService.login(username,password);
        if (user == null) {
            //打印日志
            log.warn(ResultCode.FAILED_LOGIN.toString());
            return AppResult.failed(ResultCode.FAILED_LOGIN);
        }
        //如果登录成功把User对象设置到Session作用域中
        HttpSession session = request.getSession(true);
        session.setAttribute(AppConfig.USER_SESSION,user);
        //返回结果
        return AppResult.success();
    }


    @ApiOperation("用户信息")
    @GetMapping("/info")
    public AppResult<User> getUserInfo(HttpServletRequest request,
                                       @ApiParam("id")@RequestParam(value = "id",required = false) Long id) {

        User user = null;
        User userBefore = null;
        //根据id值判断用户的获取方式
         if (id == null) {
             //当id为空时，从Session中获取用户登录信息
             HttpSession session = request.getSession(false);
             //判断当前session和用户信息是否有效
             userBefore = (User) session.getAttribute(AppConfig.USER_SESSION);
             user = userService.selectById(userBefore.getId());
         } else {
             //当id不为空时，从数据库中按id查询用户信息
             user = userService.selectById(id);

         }
         //判断用户对象是否为空
        if (user == null) {
            return AppResult.failed(ResultCode.FAILED_USER_NOT_EXISTS);
        }
        return AppResult.success(user);

    }
    @ApiOperation("退出登录")
    @GetMapping("/logout")
    public AppResult logout(HttpServletRequest request) {
         HttpSession session = request.getSession();

         if (session != null) {
             //打印日志
             log.info("退出成功");
             //表示用户在登录状态，直接销毁session
             session.invalidate();
         }
         return AppResult.success("退出成功");
    }

    @ApiOperation("修改个人信息")
    @PostMapping("/modifyInfo")
    public AppResult modifyInfo(HttpServletRequest request,
                                @ApiParam("用户名")@RequestParam(value = "username",required = false) String username,
                                @ApiParam("昵称")@RequestParam(value = "nickname",required = false)String nickname,
                                @ApiParam("性别")@RequestParam(value = "gender",required = false)Byte gender,
                                @ApiParam("邮箱")@RequestParam(value = "email",required = false)String email,
                                @ApiParam("电话号")@RequestParam(value = "phoneNum",required = false)String phoneNum,
                                @ApiParam("个人简介")@RequestParam(value = "remark",required = false)String remark) {
        //1.接收参数
        //2.进行非空校验，如果全部为空，则返回错误描述
        if (StringUtil.isEmpty(username) && StringUtil.isEmpty(nickname)
                && StringUtil.isEmpty(email) && StringUtil.isEmpty(phoneNum)
                && StringUtil.isEmpty(remark)  && gender == null) {
            //返回错误信息
            return AppResult.failed("请输入要更新的内容");
        }
        //通过session获取用户信息
        HttpSession session = request.getSession(false);
        User user = (User) session.getAttribute(AppConfig.USER_SESSION);
        //3.构造要更新的对象
        User updateUser = new User();
        updateUser.setId(user.getId());
        updateUser.setUsername(username);
        updateUser.setNickname(nickname);
        updateUser.setGender(gender);
        updateUser.setEmail(email);
        updateUser.setPhoneNum(phoneNum);
        updateUser.setRemark(remark);

        //4.调用service
        userService.modifyInfo(updateUser);

        //5.查询最新用户信息
          user = userService.selectById(user.getId());
          //6. 将最新的用户信息存入session
          session.setAttribute(AppConfig.USER_SESSION,user);
        //7. 返回结果
        return AppResult.success(user);

    }

    @ApiOperation("修改密码")
    @PostMapping("/modifyPwd")
    public AppResult  modifyPassword(HttpServletRequest request,
                                     @ApiParam("旧密码")@RequestParam("oldPassword")@NonNull String oldPassword,
                                     @ApiParam("新密码")@RequestParam("newPassword")@NonNull String newPassword,
                                     @ApiParam("确认密码")@RequestParam("passwordRepeat")@NonNull String newPasswordRepeat) {
        //1.校验新密码和确认密码是否相同
        if (!newPassword.equals(newPasswordRepeat)) {
            return AppResult.failed(ResultCode.FAILED_TWO_PWD_NOT_SAME);
        }
        HttpSession session = request.getSession(false);
        //2.获取登录的用户
        User user = (User) session.getAttribute(AppConfig.USER_SESSION);
        //3.调用service
        userService.modifyPassword(user.getId(),newPassword,oldPassword);
        //4.销毁session
        if (session != null) {
            session.invalidate();
        }
        //5.返回结果
          return AppResult.success();
    }
}
